Description of the blocks
4.2 Diagnostics block MMDiag
SIMOCODE pro PCS 7 Library V9.0
98
Programming and Operating Manual, 06/2017, A5E40899442002A/RS-AA/001
4.2.7
IO station failure (PROFIBUS DP or PROFINET IO)
The OB_DIAG1 / OB_DIAG1_PN block detects the failure of the station, and evaluates it
based on the event class and event number (see table).
In the event of a fault, the identifier for "higher-level fault" (OMODE = 16#40xxxxxx) is
entered for the OMODE output.
Fault
Event number
Event class
PROFIBUS DP
PROFIBUS DP station failure (
RackF_Act
)
16#C4
16#39
PROFIBUS DP station return
16#C4
16#38
PROFIBUS DP station error
16#C5
16#39
Reset PROFIBUS DP station error
16#C5
16#38
PROFIBUS DP station return, but error in assignment of
the module parameters
16#C6, 16#C7
16#38
PROFINET IO
PROFINET IO system failure
16#CA
16#39
PROFINET IO station failure
16#CB
16#39
Reset PROFINET IO station error
16#C5
16#38
Return of PROFINET IO station, but error
16#CC
16#38
Return of PROFINET IO station, but target configuration
not equal to actual configuration
16#CD
16#38
Return of PROFINET IO station, but error in assignment
of the module parameters
16#CE
16#38
If the "rack failure" error (
RackF_Act = 1
) occurs, the connection to the device is lost (
BusFlt
= 1
).
Reference
Error numbers (Page 77)
You will find more information about the organization blocks in the reference manual System
and Standard Functions for S7-300/400 in the Internet
